public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (!super.equals(obj))
			return false;
		if (getClass() != obj.getClass())
			return false;
		Employee other = (Employee) obj;
		DecimalFormat df = new DecimalFormat("#.##");
		if (company == null) {
			if (other.company != null)
				return false;
		} else if (!company.equals(other.company))
			return false;
		if (!df.format(this.salary).equals(df.format(other.salary)) )
			return false;
		return true;
	}